CN109358294A - Cell batteries open circuit online monitoring system - Google Patents
Cell batteries open circuit online monitoring system Download PDFInfo
- Publication number
- CN109358294A CN109358294A CN201811462656.XA CN201811462656A CN109358294A CN 109358294 A CN109358294 A CN 109358294A CN 201811462656 A CN201811462656 A CN 201811462656A CN 109358294 A CN109358294 A CN 109358294A
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- triode
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- power supply
- cell batteries
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention belongs to direct current system operation management technical fields, and in particular to cell batteries open circuit online monitoring system.The present invention uses DC power supply remotely integrated monitoring device and remote server, realize the status monitoring of the DC power supply for power station scene, it collects by remote server by the long-range data of the DC power supply charging module that integrated monitoring device uploads and battery operating status of DC power supply, facilitate monitoring of the personnel to field condition, guarantees being normally carried out for power station operation.
Description
Technical field
The invention belongs to direct current system operation management technical fields, and in particular to cell batteries open circuit on-line monitoring system
System.
Background technique
The direct current system of substation is that breaker jump/combined floodgate, relay protection and peace are set from device, communication in normal state
Standby wait provides DC power supply.In the case where electricity consumption of standing is interrupted, direct-flow storage battery group plays the effect of its independent current source --- be
Breaker jump/combined floodgate, relay protection and peace provide DC power supply from device, communication equipment emergency lighting etc..Direct current system is once
Break down, at this time if electric system is broken down simultaneously, stand in protective relaying device, automatic safety device, because lose directly
The supply in galvanic electricity source can not issue trip command tripping corresponding failure point, cause breaker tripping, expand accident impact range, danger
And entire power system security.In recent years because DC power supply go wrong the case for leading to electric system major accident when have hair
It is raw, it results in significant economic losses and undesirable social influence；On June 18th, 2016, the Shaanxi southern suburbs 330kV substation is in cable
After ditch kindling, there is exception in interior direct current system of standing, and protective device, automatic safety device, which are unable to run, leads to fault spread, finally
3 main transformers are caused to burn, 8 110kV substation power loss lose 280,000 kilowatts of load, and accident exposes DC power system and exists
There are serious loss, there are wretched insufficiencies in terms of direct current system monitors all standing in terms of operation management.
Transforming plant DC battery group generally uses tandem stand-by power supply, when direct current is main for station exchange power loss or straight
The battery group of current charge module failure, stand-by power supply just undertakes whole station DC load, if existed in battery group at this time single
Accumulator body open circuit or battery group are detached from bus, will directly contribute DC bus decompression, guarantor will be will lead at this time by breaking down
Protection unit tripping, breaker can not by Fault Isolation, expand accident range, occur the similar southern suburbs 330kV become main transformer burn, big face
The long-pending great serious accident having a power failure, therefore a kind of device that can in time bridge open circuit battery and long-range monitoring dress are provided
It is set to for current urgent problem to be solved.
Summary of the invention
The present invention is in order to solve above-mentioned problems of the prior art, and the present invention provides cell batteries open circuit is online
Monitoring system is collected by remote server by the DC power supply DC power supply charging module that remotely integrated monitoring device uploads
And the data of battery operating status, facilitate monitoring of the personnel to field condition, guarantees being normally carried out for power station operation.
The specific technical solution that the present invention uses is:
Cell batteries are opened a way online monitoring system, including DC power supply remotely integrated monitoring device and remote service
Device, remotely integrated monitoring device and remote server communicate to connect the DC power supply, the DC power supply long-range one
Body monitoring device includes monitoring assembly, industrial personal computer and the DTU wireless terminal with industrial personal computer communication connection, and the DTU is wireless
Terminal and remote server are established by wireless signal to be communicated to connect, and the monitoring assembly includes communicating to connect with industrial personal computer
Battery crossover assembly and voltage monitoring terminal, the voltage signal inputs of the voltage monitoring terminal and are serially connected in battery
Current divider connection on DC bus.
The remote server is also connected with multiple computers by interchanger.
Remotely integrated monitoring device further includes the charging module connecting with industrial computer communication to the DC power supply, described
The electric energy output end of charging module connect with battery.
The battery crossover assembly includes single-chip microcontroller, bridge circuit and circuit for alarming, and the bridge circuit includes
Bridge diode D1 and with bridging the concatenated current sensor of diode D1, the output end of the single-chip microcontroller and current sensor
Electrical connection, the control terminal of the single-chip microcontroller are connect with circuit for alarming.
The circuit for alarming includes driving circuit and alarm, and the driving circuit is controlled by relay KM and alarmed
Device on-off, the driving circuit include enabling module and switch module,
The enabled module includes the first resistor R1, second resistance R2,3rd resistor R3 and the one or three being sequentially connected in series
Pole pipe Q1, the first resistor R1 are serially connected in the control terminal of single-chip microcontroller, the base stage company of 3rd resistor R3 and the first triode Q1
It connects, second resistance R2 is connect with the node that 3rd resistor R3 is concatenated with the emitter of the first triode Q1, the first triode Q1's
Collector is connect with switch module.
The switch module includes the 4th resistance R4, the 5th resistance R5 and the second triode Q2 being sequentially connected in series, and the 4th
Resistance R4 is connect with the collector of the first triode Q1, and the 5th resistance R5 is connect with the base stage of the second triode Q2, the two or three pole
The emitter of pipe Q2 is grounded, and the coil of relay KM is in series between the collector and power supply of the second triode Q2.
The first triode Q1 is PNP type triode, and the second triode Q2 is NPN type triode.
The second resistance R2 concatenates the series circuit to be formed with 3rd resistor R3 and is also parallel with first capacitor C1.
The 5th resistance R5 connects between the connecting node of the 4th resistance R4 and the emitter of the second triode Q2
There is the second capacitor C2, the coil of the relay KM is also parallel with the second diode D2, the conducting direction of the second diode D2
It is oppositely arranged with the current direction of relay KM.
The beneficial effects of the present invention are:
Remotely integrated monitoring device and remote server, realization are straight for power station scene using DC power supply by the present invention
The status monitoring in galvanic electricity source is collected by remote server by the DC power supply DC power supply that remotely integrated monitoring device uploads
The data of charging module and battery operating status, facilitate monitoring of the personnel to field condition, guarantee power station operation it is normal into
Row.
Detailed description of the invention
Fig. 1 is the functional block diagram of present system.
Fig. 2 is the schematic diagram of bridge circuit.
Fig. 3 is the schematic diagram of circuit for alarming.
In attached drawing, 1, remote server, 2, industrial personal computer, 3, DTU wireless terminal, 4, battery crossover assembly, 5, voltage prison
Terminal is surveyed, 6, current divider, 7, interchanger, 8, computer, 9, charging module, 10, single-chip microcontroller, 11, current sensor, 12 represent alarm
Device.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the invention will be further described:
For example shown in Fig. 1 to Fig. 3, the present invention is a kind of cell batteries open circuit online monitoring system for specific implementation, including
DC power supply remotely integrated monitoring device and remote server 1, the long-range integrated monitoring device and remote of the DC power supply
Journey server 1 communicates to connect, and remotely integrated monitoring device includes monitoring assembly, industrial personal computer 2 and and work to the DC power supply
The DTU wireless terminal 3 that control machine 2 communicates to connect, the DTU wireless terminal 3 and remote server 1 are established logical by wireless signal
Letter connection, the monitoring assembly include the battery crossover assembly 4 communicated to connect with industrial personal computer 2 and voltage monitoring terminal 5, institute
The voltage signal inputs for the voltage monitoring terminal 5 stated are connect with the current divider 6 being serially connected on battery DC bus, described
Voltage monitoring terminal 5 is the digital voltmeter with serial communication function.The present invention is collected by remote server by direct current
The long-range data of the DC power supply charging module that integrated monitoring device uploads and battery operating status of power supply, facilitate personnel couple
The monitoring of field condition guarantees being normally carried out for power station operation, and remotely integrated monitoring device setting exists the DC power supply
Power station scene is integrated system by industrial personal computer is highly integrated, easy to maintain, greatly improves power station inspection, the ability of maintenance.
Further, as shown in Figure 1, the remote server 1 is also connected with multiple computers 8 by interchanger 7.Remotely
Monitoring personnel can understand the DC power supply operating status at scene by computer 8 in time.
Further, remotely integrated monitoring device further includes filling with 2 communication connection of industrial personal computer to the DC power supply
The electric energy output end of electric module 9, the charging module 9 is connect with battery.Charging module 9 is the storage being equipped with for substation
Electric battery electrifier carries out battery in the insufficient situation of battery electric energy to fill energy, and the industrial personal computer 2 of setting is by charging module
9 communication interface is attached, and charge information is collected, convenient for monitoring.
Because battery is tandem working mode, any battery pack open circuit, whole battery current circuit will break
It opens, DC bus power loss will be caused, the serious consequence of protective device tripping, therefore, further, the DC power supply is long-range
Integrated monitoring device further includes having battery crossover assembly 4, and the battery crossover assembly 4 and industrial personal computer 2 communicate to connect.
The battery crossover assembly 4 includes single-chip microcontroller 10, bridge circuit and circuit for alarming, the bridge circuit packet
Include bridging diode D1 and with the bridging concatenated current sensor 11 of diode D1, the single-chip microcontroller 10 and current sensor 11
Output end electrical connection, the control terminal of the single-chip microcontroller 10 connect with circuit for alarming.When current sensor 11 detects electric current
Default is bridging diode D1 conducting afterwards, and the battery for illustrating that the battery crossover assembly 4 is bridged at this time breaks down, bridges
It comes into force, after detecting current signal by 10 Cutoff current sensor 11 of single-chip microcontroller, single-chip microcontroller 10 uploads alarm signal to industry control
Machine 2 reports remote server by industrial personal computer 2, scene here by single-chip microcontroller 10 start circuit for alarming to the staff at scene into
Row prompt, reminds staff to carry out maintenance and inspection, avoids fault spread.
The bridge circuit of battery crossover assembly 4 of the invention is made without working power using diode unilateral conduction
Used time need to only be connected anti-parallel to battery both ends, once accumulator pole sex reversal, diode are connected automatically, no time slot.
Further, the circuit for alarming includes driving circuit and alarm 12, alarm 12 of the present invention
For large-power alarm system, the driving circuit controls 12 on-off of alarm by relay KM, and the driving circuit includes
Enabled module and switch module,
The enabled module includes the first resistor R1, second resistance R2,3rd resistor R3 and the one or three being sequentially connected in series
Pole pipe Q1, the first resistor R1 are serially connected in the control terminal of single-chip microcontroller 10, the base stage of 3rd resistor R3 and the first triode Q1
Connection, second resistance R2 are connect with the node that 3rd resistor R3 is concatenated with the emitter of the first triode Q1, the first triode Q1
Collector connect with switch module.
The switch module includes the 4th resistance R4, the 5th resistance R5 and the second triode Q2 being sequentially connected in series, and the 4th
Resistance R4 is connect with the collector of the first triode Q1, and the 5th resistance R5 is connect with the base stage of the second triode Q2, the two or three pole
The emitter of pipe Q2 is grounded, and the coil of relay KM is in series between the collector and power supply of the second triode Q2.
The working principle of driving circuit is: after the control terminal i.e. I/O port output high level of single-chip microcontroller 10, second resistance R2
With 3rd resistor R3 due to partial pressure of connecting, the first triode Q1 base voltage is lower than emitter voltage, the first triode Q1 at this time
Conducting, the load capacity of 10 control terminal of single-chip microcontroller, subsequent second triode Q2 base stage are improved by the enabled circuit of the part
It powers on, the second triode Q2 conducting, so that the coil of relay KM powers on, by the common drive for enabling module and switch module
It is dynamic, the load capacity of single-chip microcontroller can either be improved, and improve the controlled accuracy of switch module, in turn ensure relatively high power
Relay KM coil can be connected smoothly.
Further, the first triode Q1 is PNP type triode, and the second triode Q2 is NPN type three
Pole pipe.
Further, the second resistance R2 concatenates the series circuit to be formed with 3rd resistor R3 and is also parallel with the first electricity
Hold C1.The clutters such as the sharp wave of IO output level of single-chip microcontroller 10 are eliminated by first capacitor C1, improve signal quality, when the first electricity
After appearance C1 gradually charges, the first triode Q1 is gradually turned on, and avoids being mutated, the company of the 5th resistance R5 and the 4th resistance R4
It connects and is in series with the second capacitor C2 between node and the emitter of the second triode Q2, the coil of the relay KM is also parallel with
Second diode D2, the current direction of the conducting direction and relay KM of the second diode D2 are oppositely arranged.Second capacitor C2
Similar effect is played, being directly accessed for the high current of control relay KM is avoided, improves the stability of circuit.
Claims (9)
- The online monitoring system 1. cell batteries are opened a way, including DC power supply remotely integrated monitoring device and remote server (1), remotely integrated monitoring device and remote server (1) communicate to connect the DC power supply, it is characterised in that: described DC power supply remotely integrated monitoring device include monitoring assembly, industrial personal computer (2) and with the DTU of industrial personal computer (2) communication connection without Line terminal (3), the DTU wireless terminal (3) and remote server (1) are established by wireless signal and are communicated to connect, described Monitoring assembly includes the battery crossover assembly (4) and voltage monitoring terminal (5) with industrial personal computer (2) communication connection, the electricity The voltage signal inputs of pressure monitoring terminal (5) are connect with the current divider (6) being serially connected on battery DC bus.
- The online monitoring system 2. cell batteries according to claim 1 are opened a way, it is characterised in that: the remote service Device (1) is also connected with multiple computers (8) by interchanger (7).
- The online monitoring system 3. cell batteries according to claim 1 are opened a way, it is characterised in that: the DC power supply Long-range integration monitoring device further include with the charging module (9) of industrial personal computer (2) communication connection, the charging module (9) Electric energy output end is connect with battery.
- The online monitoring system 4. cell batteries according to claim 1 are opened a way, it is characterised in that: the battery across Connection device (4) includes single-chip microcontroller (10), bridge circuit and circuit for alarming, the bridge circuit include bridging diode D1 and with It bridges the concatenated current sensor of diode D1 (11), the single-chip microcontroller (10) and the output end of current sensor (11) are electrically connected It connects, the control terminal of the single-chip microcontroller (10) is connect with circuit for alarming.
- The online monitoring system 5. cell batteries according to claim 4 are opened a way, it is characterised in that: the circuit for alarming Including driving circuit and alarm (12), the driving circuit controls alarm (12) on-off by relay KM, described Driving circuit includes enabling module and switch module,The enabled module includes the first resistor R1 being sequentially connected in series, second resistance R2,3rd resistor R3 and the first triode Q1, the first resistor R1 are serially connected in the control terminal of single-chip microcontroller (10), the base stage company of 3rd resistor R3 and the first triode Q1 It connects, second resistance R2 is connect with the node that 3rd resistor R3 is concatenated with the emitter of the first triode Q1, the first triode Q1's Collector is connect with switch module.
- The online monitoring system 6. cell batteries according to claim 5 are opened a way, it is characterised in that: the switch module Including the 4th resistance R4, the 5th resistance R5 and the second triode Q2 being sequentially connected in series, the 4th resistance R4 and the first triode Q1's Collector connection, the 5th resistance R5 are connect with the base stage of the second triode Q2, the emitter ground connection of the second triode Q2, and the two or three The coil of relay KM is in series between the collector and power supply of pole pipe Q2.
- The online monitoring system 7. cell batteries according to claim 6 are opened a way, it is characterised in that: the one or three pole Pipe Q1 is PNP type triode, and the second triode Q2 is NPN type triode.
- The online monitoring system 8. cell batteries according to claim 5 are opened a way, it is characterised in that: the second resistance R2 concatenates the series circuit to be formed with 3rd resistor R3 and is also parallel with first capacitor C1.
- The online monitoring system 9. cell batteries according to claim 6 are opened a way, it is characterised in that: the 5th resistance The second capacitor C2, the relay are in series between the connecting node of R5 and the 4th resistance R4 and the emitter of the second triode Q2 The coil of device KM is also parallel with the second diode D2, and the current direction of the conducting direction and relay KM of the second diode D2 is reversed Setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811462656.XA CN109358294A (en) | 2018-12-03 | 2018-12-03 | Cell batteries open circuit online monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811462656.XA CN109358294A (en) | 2018-12-03 | 2018-12-03 | Cell batteries open circuit online monitoring system |
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| Publication Number | Publication Date |
|---|---|
| CN109358294A true CN109358294A (en) | 2019-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811462656.XA Pending CN109358294A (en) | 2018-12-03 | 2018-12-03 | Cell batteries open circuit online monitoring system |
Country Status (1)
| Country | Link |
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| CN (1) | CN109358294A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596601A (en) * | 2019-08-19 | 2019-12-20 | 华电电力科学研究院有限公司 | Single storage battery open circuit on-line monitoring and automatic bridging method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596601A (en) * | 2019-08-19 | 2019-12-20 | 华电电力科学研究院有限公司 | Single storage battery open circuit on-line monitoring and automatic bridging method |
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Application publication date: 20190219 |
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